/Engine/Plugins/Experimental/Water/Source/Runtime/Public/WaterSplineComponent.h
Call to update water spline Necessary if using USplineComponent::AddPoint(s) instead of editing the spline in editor
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=Water, DisplayName="Synchronize And Broadcast Data Change") void K2_SynchronizeAndBroadcastDataChange()